I've written up some instructions for Bobble Stitch (which is different to puff stitch and popcorn stitch). This can be found
here . I just worked up a bag using this and I was very pleased with the results - the highly textured surface evened out any of my more random stitches!
Do let me know if there is anything unclear or if more (or less!) detail is required!
Thankyou for your input - I do value it!
Kate